Global Patent Index - EP 0255442 A2

EP 0255442 A2 19880203 - Circuit device for implementing the access protocol for serial exchange of numerical informations among terminals interconnected by an optical fiber star network.

Title (en)

Circuit device for implementing the access protocol for serial exchange of numerical informations among terminals interconnected by an optical fiber star network.

Title (de)

Schaltungsanordnung zur Ausführung des Zugriffsprotokolls zum seriellen Austausch von Informationen zwischen durch ein fiberoptisches Sternnetz verbundenen Endgeräten.

Title (fr)

Circuit pour la mise en oeuvre d'un protocole d'accès pour l'échange en série d'informations numériques entre terminaux interconnectés au moyen d'un réseau à fibres optiques en étoile.

Publication

EP 0255442 A2 19880203 (EN)

Application

EP 87401766 A 19870729

Priority

IT 2131086 A 19860730

Abstract (en)

The present invention relates to a device for implementing the access protocol for serial exchange of numerical informations among terminals interconnected by an optical fiber star network, using queuing state transmission in a small fraction of information channel capacity, thanks to a circuit for measuring the distance from each terminal to star center, which allows to synchronize the queuing state transmission minimizing the physical occupation of transmission channel, the delay queuing for accessing to the network being managed by an access algorithm, processed by the device itself, which is provided in each terminal of the network.

IPC 1-7

H04L 11/16

IPC 8 full level

H04L 12/28 (2006.01); H04L 12/44 (2006.01)

CPC (source: EP US)

H04L 12/44 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE ES FR GB IT LI SE

DOCDB simple family (publication)

EP 0255442 A2 19880203; EP 0255442 A3 19900328; EP 0255442 B1 19931020; AT E96260 T1 19931115; DE 3787846 D1 19931125; DE 3787846 T2 19940421; ES 2043678 T3 19940101; IT 1213311 B 19891220; IT 8621310 A0 19860730; US 4813012 A 19890314

DOCDB simple family (application)

EP 87401766 A 19870729; AT 87401766 T 19870729; DE 3787846 T 19870729; ES 87401766 T 19870729; IT 2131086 A 19860730; US 8041187 A 19870730